| abstract |
An insulated electrical cable, in which a conductor is coated with an insulating material that substantially comprises a resin composition comprising the following components (A), (B) and (C) and in which a flexural modulus of elasticity of The resin composition is not more than 2000 MPa: (A) 100 parts by weight of a mixture of a micro-combination and a modified micro-combination, in which the micro-combination comprises 1 to 70% by weight of polypropylene and 99 to 30% by weight of a propylene-ethylene random copolymer comprising 15 to 50 mol% of an ethylene polymerization unit and 85 to 50 mol% of a propylene polymerization unit and wherein the total fractionated eluted components by a method of elution fractionation with temperature rise using o-dichlorobenzene as a solvent comprises (a) from 20 to 80% by weight of a component eluted at -40 ° C or greater but less than + 20 ° C, (b) from 10 to 70% by weight of a component eluted at + 20 ° C or greater but less than + 100 ° C and (c) from 1 to 40% by weight of a component eluted at + 100 ° C or greater, in which the sum of component (a), the component (b) and component (c) is 100% by weight, in which the modified microcombination is prepared by joining an organic acid group to the microcombination, in which the concentration of the organic acid group in the mixture is 0 , 01 to 1 mmol per 1 g of the total microcombination, and the total microcombination contains 10 to 90% by weight of an eluted component at -40 ° C to + 30 ° C in the total eluted components fractionated by the elution fractionation method with elevation of temperature using o-dibromobenzene as a solvent, (B) not more than 700 parts by weight of polypropylene and (C) from 5 to 200 parts by weight of an ionic crosslinking charge based on 100 parts by weight of the total amount of the component (A) and component (B). |